Daffodils and (fake) snow

I managed an after work run in daylight,  thanks to the later sunsets.
That meant I could take a pleasant route through the park, admiring the flora and fauna (a deer and squirrels).
There were also a lot of big metal mats by the path near the pond, and a lot of mud. I thought it must be construction work, until I saw the fake snow (see extra). They must be using it as a film set again.